class Animal{
    public String name;
    public int age;
    public void eat(){
        System.out.println(name+" 正在吃饭！");
    }
}
class Dog extends Animal{
 public String name;
    public int age;

    public void eat(){
        System.out.println(name+" 正在吃饭！");
    }

    public void wangwang(){
        System.out.println(name+" 正在叫！");
    }
}
class Cat extends Animal{
public String name;
    public int age;
    public void eat(){
        System.out.println(name+" 正在吃饭！");
    }

    public void miaomiao(){
        System.out.println(name+" 正在喵喵叫！");
    }
}


public class Test {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.name = "坦克";
        dog.eat();
        dog.wangwang();

        Cat cat = new Cat();
        cat.name = "小咪";
        cat.eat();
        cat.miaomiao();
    }
}
